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Weather April in Knoxville, United States of America Visitors to Knoxville during the month of April should plan on bringing a raincoat since it will be raining some days. The amount of rain is high with an average of 83mm (3.3in). The average maximum temperature lies around 16.0Â°C (60.8Â°F). This month is known as a chilly month.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature. To find out how often it rises over 70, 80 or 90 Â°F each month in Knoxville, scroll down farther. There are also monthly and yearly counts of days with cold weather. All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.